package com.haiyou.dc.message.util;

/**
 * @author pc
 */
public class StringUtil {

    public static String compare(String uone, String utwo) {
        String user = uone.compareToIgnoreCase(utwo) < 0 ? uone + "_" + utwo : utwo + "_" + uone;
        return user;
    }

    public static boolean isBlank(String str) {
        return (str == null || "".equals(str.trim()));
    }
}
